Gauge for sheet-cutting machines



ATTORNEY.

INVENTOR.

Patented a... 24, 1928.

UNITED STATES GEORGE E. MEYEIRS, OF NEW YORK, N. Y.

GAUGE FOR SHEET-CUTTING MACHINES.

Application filedApril 17, 1926. Serial No. 102,608.

The invention relates to sheet cutting 1na chines and has particularreference to the back gauge of such machines against which the sheetsare positioned preliminary to being fed between the cutters- In someforms of these cutting or shearing machines the gauge, in the form of ametal bar, is secured to the wooden bed of the machine by fasteningscrews engaging directly in the bed. In the use of the machine theoperators bring the sheets against this gauge bar with some considerableforce in positioning the same, particularly in those cases where thesheets are handled in bunches and itbecomes necessary to strike themagainst the gauge bar with some force in order to bring the edges of therespective sheets of the bunch into registry with each other and incontact with the gauge. Such continuous striking of the sheets againstthe gauge has a tendency to loosen its holding screws in the wooden bedof the machine and this results in throwing the gauge out of adjustmentand the consequent irregular or improper cutting of the sheets.

The continuous loosening ofthe screws in this way soon enlarges theiropenings in the wooden bed to such an extent that effective retighteningof the same is prevented, whereupon it becomes necessary to eitherchange the position of the gauge on the bed, which is undersirable, orelse provide the gauge with new screw openings to permit of thefastening screws being entered into the bed at new points without changein 0. tion of the gauge, and this operation iorming new screw-openingsis objectionable both on account of expense and also in that it dis}figures the gauge.

Having the foregoing 1n mind, it has been the object of my presentinvention to provide an improved construction of gauge by means of whichthe objectionable-features referred to may be avoided and accurateadjustment of the gauge be maintained. This object is efi'ected by meansof the novel features of construction hereinafter described and claimedand which are illustrated in the accompanying drawmgs, in which- Fig. 1is a plan view of so much of a cutting or shearing machine as isnecessary for the proper illustration of my invention.

Fig. 2 is an enlarged cross'section of the gauge in position on themachine bed, taken on the line 22 of Fig. 1.

Fig. 3 is an enlarged longitudinal section of the gauge in position onthe machine bed, taken on the line 33 of Fig. 5.

Fig. 4 is a sectional plan with the section taken on the line 4i'4t ofFig. 2.

Fig. 5 is an irregular section 'takengenera-lly on the line 55 of Fig.3.

Fig. 6 is an end view looking from the left in Fig. 5, with the endadjusting screw in section on the line 6-6 of said Fig. 5. i

The cutting machine" to which my invention is applied is or may be ofusual con struction and operation, the same comprising a beda mountedupon a suitable frame(not shown); a cutting or shearing device.consisting of a stationary Cutter '1) and a cooperating movable cutter0; and a treadle operated vertically movable clamp d for holding thesheets stationary after being positioned and during the cuttingoperation.

The. gauge embodying my present ims provements is located at one side ofthe bed and extends in a direction at right angles to the cutters,whereby the sheets, after being positioned with one edge against saidgauge, may be guided therebybetween the cutters to have their leadingedges cut square with those in contact with the gauge. i i

This gauge comprises a lower or base member 2 in the form of arelatively long bar, preferably of metal, which is adapted to bepermanently fastened in position on the table, as means of wood screws3, the heads of which are counter-sunk below the top surface of the barasbestshown in Fig. Mounted upon this base iuen'iber 2, for bothtransverse and longitiiidiual adjustments with respect thereto, is asecond gauge member 4 which constitutes the gauge proper and with whichthe sheets directly engage. This second or adjustable gauge member isright angular in cross section, as

. best shown in Figs. 2 and 6, and is mounted on the base member 2 withone flange l. restingupon the top surface of said base member foradjustable sliding movement thereon and with its second or verticalflange. t" extending downwardly over the inner face side of the basemember into contact with the surface of the bed or table a, thisvertical flange providing the gauge face against which the sheets arepositioned and guided.

This adjustable member 4 is held in ad than the base member, and meansfor securing said sheet engaging member in adjusted position on the basemember and with the lower edge of its Vertical flange pressed againstthe sheet supporting bed.

8. In a sheet cutting machine,rthe combination with the sheet supportingbed and the cutting device, of a sheet gauge comprising a base membermounted on the bed, a right angled member adjustably mounted on saidbase member with one flange thereof resting upon the upper surface ofthe base member and with the other or vertical flange overlying the basemember at the gauge side TY thereof, and means for securing saidadjustable gauge member in adjusted position on the base memberincluding set screws threaded into the base member with their inner endsbearing against the inner side of the said vertical flange of theadjustable gauge member.

4.7 In a sheet cutting machine, the combi nation with the sheetsupporting bed and the cutting device, of a sheet gauge mounted on thebed in a position at right angles to the cutting device and comprising afixed base member, a sheet engaging member adjustably mounted on saidbase member for movement in a direction toward and from the cutter andbeing provided with scale markings thereon, an adjusting screwconnecting the sheet engaging member with the base member for adjustingthe same on said base member relatively to the cutter and means forsecuring said sheet engaging member in adjusted position on the basemember.

In testimony whereof I afiix my signature.

GEORGE F. MEYERS.

